21163491

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{11699}}^1$

素因数の和:11775

約数の個数: 16

約数和(自身を含む): 31824000

約数和(自身を除く): 10660509

約数列:

[1, 3, 9, 27, 67, 201, 603, 1809, 11699, 35097, 105291, 315873, 783833, 2351499, 7054497, 21163491]

約数ペア:

[(1, 21163491), (3, 7054497), (9, 2351499), (27, 783833), (67, 315873), (201, 105291), (603, 35097), (1809, 11699)]